Workflow for small businesses

Just curious what tools you use in your companies in regards to workflow be it procedures, software, outsourcing options, etc. The reason I ask is I'm not yet to the point I can hire other people (except for some "micro-employees") but I'm getting to the point things are getting busier and tasks need to be managed better so we are not reinventing the wheel at the start of each new project. if software solutions are mentioned I need to know about things that run on both Windows and OSX as I use both in my business.

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